/* Copyright (c) 2020 XEPIC Corporation Limited */
#ifndef IVL_PDelays_H
#define IVL_PDelays_H
/*
 * Copyright (c) 1999-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 of the License, or (at your option)
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA.
 */

#include <iostream>
#include <list>
#include <string>

#include "svector.h"

#ifdef __GNUC__
#if __GNUC__ > 2
using namespace std;
#endif
#endif

class Design;
class NetScope;
class NetExpr;
class PExpr;

/*
 * Various PForm objects can carry delays. These delays include rise,
 * fall and decay times. This class arranges to carry the triplet.
 */
class PDelays {
 public:
  PDelays();
  ~PDelays();

  /* Set the delay expressions. If the delete_flag is true, then
     this object takes ownership of the expressions, and will
     delete it in the destructor. */
  void set_delay(PExpr*);
  void set_delays(const list<PExpr*>* del, bool delete_flag = true);

  unsigned delay_count() const;

  void eval_delays(Design* des, NetScope* scope, NetExpr*& rise_time,
                   NetExpr*& fall_time, NetExpr*& decay_time,
                   bool as_nets_flag = false) const;

  void dump_delays(ostream& out) const;

 private:
  PExpr* delay_[3];
  bool delete_flag_;

 private:  // not implemented
  PDelays(const PDelays&);
  PDelays& operator=(const PDelays&);
};

ostream& operator<<(ostream& o, const PDelays&);

#endif /* IVL_PDelays_H */
